这不是类的工作方式。数据应存储在类实例内，而不是全局。
class SMSStore(object): def __init__(self): self.store = [] self.message_count = 0 def add_new_arrival(self,number,time,text): self.store.append(("From: "+number, "Recieved: "+time,"Msg: "+text)) self.message_count += 1 def delete(self, i): if i >= len(store): raise IndexError else: del self.store[i] self.message_count -= 1sms_store = SMSStore()sms_store.add_new_arrival("1234", "now", "lorem ipsum")try: sms_store.delete(20)except IndexError: print("Index does not exist")print sms_store.store# multiple separate storessms_store2 = SMSStore()sms_store2.add_new_arrival("4321", "then", "lorem ipsum")print sms_store2.store
